In past Republican Primaries, through seven days of early voting, 22.5% of the total votes have typically been cast. Based on that percentage, that would mean total turnout this year would surpass 2.3 million (turnout was 1.4M in 2012 and 2008).

22.6% of the votes cast during early voting are from voters who have not voted in a Republican Primary between 2008 and 2014. This voting block is almost the same size as voters who have voted in all four of the last four Republican Primaries (24.3%)